Weight based vacuum gas/vapor adsorption analyzer

DVS VacuumWeight based vacuum gas/vapor adsorption analyzerSpecially designed for measuring the adsorption kinetics and physical adsorption isotherms of porous materials such as zeolites, metal organic frameworks (MOFs), covalent organic frameworks (COFs), carbon materials, and composite materials. The system supports single component and multi-component vapor/gas analysis, accurately controls temperature and pressure, and continuously monitors changes in sample quality during the experimental process.

DVS VacuumWeight based vacuum gas/vapor adsorption analyzerUsing a combination of mechanical pumps and turbo molecular pumps to achieve and maintain a high vacuum environment. The entire chamber, including the sample, sensor, and vapor delivery system, maintains good thermal balance, ensuring stable and reliable performance over a wide temperature range (10-70 ° C) without condensation risk.

The system can accurately introduce controlled partial pressures of water vapor or organic solvents under no carrier gas conditions, thereby measuring the true vapor adsorption isotherms with almost no structural interference. In addition, the device also supports in-depth research on the drying kinetics of drug powders, making it a versatile analytical tool in the field of excellent material characterization.

▍Measurement performance:

In situ sample degassing, temperature can reach 400 ° C, vacuum degree ≤ 10 ° Torr.

Measure the in-situ drying curve of medicinal materials under different pressure and temperature conditions.

Real time adsorption/desorption kinetics.

Adsorption/desorption isotherms (constant temperature, variable pressure).

Adsorption/desorption isobars (temperature variable, pressure constant).

The apparent BET (Brunauer, Emmett, Teller) specific surface area.

• Determination of diffusion coefficient.

Adsorption heat analysis.

Dynamic competitive adsorption of two probe molecules (such as CO ₂ - H ₂ O, toluene-H ₂ O, methanol-H ₂ O).

Under constant loading conditions of one probe molecule, binary competitive adsorption of another probe molecule.

Multiple cycles of adsorption/desorption and sample regeneration.